"Most users are satisfied with iOS 7 performance, but some iPhone and iPad owners have discovered the major update has impacted the speed of their devices. If you feel like iOS 7 has made your hardware slower than it was before the update, there are some changes you can make that will likely speed things up a bit. These tricks will make the biggest difference on older device hardware running iOS 7, so if your device feels a bit sluggish after updating take a moment to make a few settings adjustments. The first few tricks may also boost your battery life too…"
Via John Evans